Backyard Ultra - Princeton
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Backyard Ultra Marathon in Princeton
The event is scheduled for September 26, 2026, at Leominster State Forest on Massachusetts State Route 31, a few feet north of the Rocky Pond Road intersection in Princeton, MA 01541. This is the event's second annual running.
The race follows a backyard ultra format. Every hour participants must complete a 4.167 mile loop. Runners who are not at the starting line at the turn of the hour are eliminated. The event finishes when a single runner completes a loop alone.
Organizers will provide light snacks, drinks (water and Gatorade), a porta potty, and one or two canopies for shade. Participants must wear blaze orange because the event takes place during hunting season and a neighboring property will host a hunting event during part of the race. Recommended items to bring include camping chairs, picnic blankets, personal food and water, a hat, basic first aid supplies, and a change of clothes.
Registration opens August 21, 2026, and closes August 31, 2026. The entry fee is $35. Entries completed before August 31 include a t shirt. Visit the organization's website for the most recent information.
